Danger zone in mandibular molars before instrumentation: an in vitro study
نویسندگان
چکیده
منابع مشابه
Danger zone in mandibular molars before instrumentation: an in vitro study.
The aim of this work was to measure the danger zone in mandibular molars, relating to strip perforations that might affect the mesial root during canal instrumentation. One hundred mesial roots were sectioned 2mm below the furcation and the distal concavities were measured with a microscope from the border of the canals to the outer dentin of the root. The average thickness of the danger zone o...
متن کاملEvaluation of Radicular Dentin Thickness of Danger Zone in Mandibular First Molars
OBJECTIVE Better understanding of the furcation anatomy may serve to decrease the risk of root perforation. The purpose of this study was to measure the thickness of root walls in the danger zone in mandibular first molars. MATERIALS AND METHODS The roots of 53 extracted human mandibular first molars were sectioned in the horizontal plane 4 mm below the orifice of the mesial and distal root c...
متن کاملevaluation of radicular dentin thickness of danger zone in mandibular first molars
objective: better understanding of the furcation anatomy may serve to decrease the risk of root perforation. the purpose of this study was to measure the thickness of root walls in the danger zone in mandibular first molars. materials and methods: the roots of 53 extracted human mandibular first molars were sectioned in the horizontal plane 4 mm below the orifice of the mesial and distal root c...
متن کاملan in vitro study of the number of distal roots and canals in mandibular first molars in iranian population
introduction: the purpose of this study was to evaluate the number of distal roots and canals in mandibular first molars and their internal anatomy radiographically within iranian population. materials and methods: a total of 310 distal roots of mandibular first molars were incorporated in this study and evaluated in terms of number of roots and number and types of canals. root canal systems we...
متن کاملThe in vivo evaluation of hand/rotary/ultrasound instrumentation in necrotic, human mandibular molars.
This in vivo, prospective, randomized, single-blinded study histologically compared biofilm/necrotic debridement efficiency of a hand/rotary technique versus a hand/rotary/1 min ultrasound technique in the mesial roots of necrotic, human mandibular molars. The hand/rotary group consisted of 20 mesial roots. The hand/rotary/ultrasound group consisted of 20 mesial roots prepared with the same han...
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ژورنال
عنوان ژورنال: Journal of Applied Oral Science
سال: 2003
ISSN: 1678-7757
DOI: 10.1590/s1678-77572003000400009